rant: filenames...

[Jan Panteltje]

On a sunny day (Mon, 15 Nov 2021 08:29:32 -0500) it happened legg
<legg@nospam.magma.ca> wrote in <3bn4pghrk12l7i45mkqkb538g497h5lnbn@4ax.com>:

I\'ve always created my own directory structure, holding, where
possible, related files and programs where they can be found
using the minimum of reason.

Strangely, a ecent Linux distro that I\'m trying to adopt doesn\'t
seem to allow this - even going so far as to deny the existence
of navigable disc and directory structures. Can\'t fathom that
philosophy.

It should be no problem on any decent Linuxx distro to make your own
partitions and directory structure.
And then use updatdb and locate to find files.
panteltje20: ~ # locate -i lm317
/usr/local/httpd/htdocs/pub/LM317_switching-regulator-schematic.png
/usr/local/httpd/htdocs/pub/backup/LM317_switching-regulator-schematic.png
/usr/local/httpd/htdocs/pub/LM317_switcher
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_test_setup_img_2318.jpg
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_no_100nF_img_2320.jpg
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_no_.25_Ohm_img_2319.jpg
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_diagram_img_2316.jpg
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_final_img_2312.jpg
/home/ftp/pub/LM317_switcher
/home/ftp/pub/LM317_switcher/LM317_switcher_test_setup_img_2318.jpg
/home/ftp/pub/LM317_switcher/LM317_switcher_no_100nF_img_2320.jpg
/home/ftp/pub/LM317_switcher/LM317_switcher_no_.25_Ohm_img_2319.jpg
/home/ftp/pub/LM317_switcher/LM317_switcher_diagram_img_2316.jpg
/home/ftp/pub/LM317_switcher/LM317_switcher_final_img_2312.jpg
/root/compile/pantel/laser_arrow_com/LM317.pdf
/root/download/html/LM317.pdf
/root/download/html/LM317_switching-regulator-schematic.png
/root/download/html/155585-da-01-en-SP_REG_LM317LZSTM.pdf

panteltje20: ~ # locate -i lm317 | grep -i pdf
/root/compile/pantel/laser_arrow_com/LM317.pdf
/root/download/html/LM317.pdf
/root/download/html/155585-da-01-en-SP_REG_LM317LZSTM.pdf

But then I am always root.
panteltje20: ~ # whoami
root

When I read about all that microsoft circus so sad, such a waste of time and bandwidth.
This laptop I am now on runs Linux Slackware from 2011
panteltje20: ~ # uname -a
Linux panteltje20 2.6.37.6 #3 SMP Sat Apr 9 22:49:32 CDT 2011 x86_64 Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz GenuineIntel GNU/Linux
I can boot latest? debian too, but much is then screwed up like for example the screen color...

So 10 years without updates and no problems!
Only thing that is no longer working on some sites is the Seamonkey browser, too lazy to compile something more recent,

My Raspberry Pi4s have a recent Chromium browser if I need one.

Microsoft is just snake oil sales like F35. [and covid vaccins].
\'grml\' was a good simple distro, runs on a real PC upstairs, is basically Debian for sysadmins.
https://grml.org/
you can install to harddisk too.

Slackware is much a one man show and internally consistent
http://www.slackware.org/

Debian is easy for the not do much in depth ones but some thing are broken,
updates are easy but may break things,
Best is almost always to compile from source...

But then again Unix you may have to have been with it from way back perhaps.
But it is everywhere by now, even in space.

 

[Jan Panteltje]

On a sunny day (Mon, 15 Nov 2021 08:29:32 -0500) it happened legg
<legg@nospam.magma.ca> wrote in <3bn4pghrk12l7i45mkqkb538g497h5lnbn@4ax.com>:

I\'ve always created my own directory structure, holding, where
possible, related files and programs where they can be found
using the minimum of reason.

Strangely, a ecent Linux distro that I\'m trying to adopt doesn\'t
seem to allow this - even going so far as to deny the existence
of navigable disc and directory structures. Can\'t fathom that
philosophy.

It should be no problem on any decent Linuxx distro to make your own
partitions and directory structure.
And then use updatdb and locate to find files.
panteltje20: ~ # locate -i lm317
/usr/local/httpd/htdocs/pub/LM317_switching-regulator-schematic.png
/usr/local/httpd/htdocs/pub/backup/LM317_switching-regulator-schematic.png
/usr/local/httpd/htdocs/pub/LM317_switcher
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_test_setup_img_2318.jpg
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_no_100nF_img_2320.jpg
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_no_.25_Ohm_img_2319.jpg
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_diagram_img_2316.jpg
/usr/local/httpd/htdocs/pub/LM317_switcher/LM317_switcher_final_img_2312.jpg
/home/ftp/pub/LM317_switcher
/home/ftp/pub/LM317_switcher/LM317_switcher_test_setup_img_2318.jpg
/home/ftp/pub/LM317_switcher/LM317_switcher_no_100nF_img_2320.jpg
/home/ftp/pub/LM317_switcher/LM317_switcher_no_.25_Ohm_img_2319.jpg
/home/ftp/pub/LM317_switcher/LM317_switcher_diagram_img_2316.jpg
/home/ftp/pub/LM317_switcher/LM317_switcher_final_img_2312.jpg
/root/compile/pantel/laser_arrow_com/LM317.pdf
/root/download/html/LM317.pdf
/root/download/html/LM317_switching-regulator-schematic.png
/root/download/html/155585-da-01-en-SP_REG_LM317LZSTM.pdf

panteltje20: ~ # locate -i lm317 | grep -i pdf
/root/compile/pantel/laser_arrow_com/LM317.pdf
/root/download/html/LM317.pdf
/root/download/html/155585-da-01-en-SP_REG_LM317LZSTM.pdf

But then I am always root.
panteltje20: ~ # whoami
root

When I read about all that microsoft circus so sad, such a waste of time and bandwidth.
This laptop I am now on runs Linux Slackware from 2011
panteltje20: ~ # uname -a
Linux panteltje20 2.6.37.6 #3 SMP Sat Apr 9 22:49:32 CDT 2011 x86_64 Intel(R) Core(TM) i5-2430M CPU @ 2.40GHz GenuineIntel GNU/Linux
I can boot latest? debian too, but much is then screwed up like for example the screen color...

So 10 years without updates and no problems!
Only thing that is no longer working on some sites is the Seamonkey browser, too lazy to compile something more recent,

My Raspberry Pi4s have a recent Chromium browser if I need one.

Microsoft is just snake oil sales like F35. [and covid vaccins].
\'grml\' was a good simple distro, runs on a real PC upstairs, is basically Debian for sysadmins.
https://grml.org/
you can install to harddisk too.

Slackware is much a one man show and internally consistent
http://www.slackware.org/

Debian is easy for the not do much in depth ones but some thing are broken,
updates are easy but may break things,
Best is almost always to compile from source...

But then again Unix you may have to have been with it from way back perhaps.
But it is everywhere by now, even in space.

 

[Edward Hernandez]

The John Doe troll stated the following in message-id
<sdhn7c$pkp$4@dont-email.me>:

> The troll doesn\'t even know how to format a USENET post...

And the John Doe troll stated the following in message-id
<sg3kr7$qt5$1@dont-email.me>:

The reason Bozo cannot figure out how to get Google to keep from
breaking its lines in inappropriate places is because Bozo is
CLUELESS...

And yet, the clueless John Doe troll has itself posted yet another
incorrectly formatted USENET posting on Fri, 12 Nov 2021 14:59:10 -0000
(UTC) in message-id <smlvfu$7ls$6@dont-email.me>.

KGyA/A3mpGHx

 

[Edward Hernandez]

The John Doe troll stated the following in message-id
<sdhn7c$pkp$4@dont-email.me>:

> The troll doesn\'t even know how to format a USENET post...

And the John Doe troll stated the following in message-id
<sg3kr7$qt5$1@dont-email.me>:

The reason Bozo cannot figure out how to get Google to keep from
breaking its lines in inappropriate places is because Bozo is
CLUELESS...

And yet, the clueless John Doe troll has itself posted yet another
incorrectly formatted USENET posting on Fri, 12 Nov 2021 14:59:10 -0000
(UTC) in message-id <smlvfu$7ls$6@dont-email.me>.

KGyA/A3mpGHx

 

[Edward Hernandez]

The John Doe troll stated the following in message-id
<sdhn7c$pkp$4@dont-email.me>:

> The troll doesn\'t even know how to format a USENET post...

And the John Doe troll stated the following in message-id
<sg3kr7$qt5$1@dont-email.me>:

The reason Bozo cannot figure out how to get Google to keep from
breaking its lines in inappropriate places is because Bozo is
CLUELESS...

And yet, the clueless John Doe troll has itself posted yet another
incorrectly formatted USENET posting on Fri, 12 Nov 2021 15:01:51 -0000
(UTC) in message-id <smlvku$7ls$7@dont-email.me>.

MqPXPxlT6QE7

 

[Edward Hernandez]

The John Doe troll stated the following in message-id
<sdhn7c$pkp$4@dont-email.me>:

> The troll doesn\'t even know how to format a USENET post...

And the John Doe troll stated the following in message-id
<sg3kr7$qt5$1@dont-email.me>:

The reason Bozo cannot figure out how to get Google to keep from
breaking its lines in inappropriate places is because Bozo is
CLUELESS...

And yet, the clueless John Doe troll has itself posted yet another
incorrectly formatted USENET posting on Fri, 12 Nov 2021 15:01:51 -0000
(UTC) in message-id <smlvku$7ls$7@dont-email.me>.

MqPXPxlT6QE7

 

[Dimiter_Popoff]

On 11/15/2021 15:29, legg wrote:

....
I\'ve always created my own directory structure, holding, where
possible, related files and programs where they can be found
using the minimum of reason.

Strangely, a ecent Linux distro that I\'m trying to adopt doesn\'t
seem to allow this - even going so far as to deny the existence
of navigable disc and directory structures. Can\'t fathom that
philosophy.

RL

The unix filenaming system is broken by design. Their file names
are case dependent; and this is so deeply entrenched because of
legacy etc. there is zero chance this will ever be fixed.

I know this post of mine will put the linux users in fuming mode
but it is the reality - and they will be fuming because they
know it.

Dimiter

======================================================
Dimiter Popoff, TGI http://www.tgi-sci.com
======================================================
http://www.flickr.com/photos/didi_tgi/

 

[Dimiter_Popoff]

On 11/15/2021 15:29, legg wrote:

....
I\'ve always created my own directory structure, holding, where
possible, related files and programs where they can be found
using the minimum of reason.

Strangely, a ecent Linux distro that I\'m trying to adopt doesn\'t
seem to allow this - even going so far as to deny the existence
of navigable disc and directory structures. Can\'t fathom that
philosophy.

RL

The unix filenaming system is broken by design. Their file names
are case dependent; and this is so deeply entrenched because of
legacy etc. there is zero chance this will ever be fixed.

I know this post of mine will put the linux users in fuming mode
but it is the reality - and they will be fuming because they
know it.

Dimiter

======================================================
Dimiter Popoff, TGI http://www.tgi-sci.com
======================================================
http://www.flickr.com/photos/didi_tgi/

 

[Dimiter_Popoff]

On 11/15/2021 15:29, legg wrote:

....
I\'ve always created my own directory structure, holding, where
possible, related files and programs where they can be found
using the minimum of reason.

Strangely, a ecent Linux distro that I\'m trying to adopt doesn\'t
seem to allow this - even going so far as to deny the existence
of navigable disc and directory structures. Can\'t fathom that
philosophy.

RL

The unix filenaming system is broken by design. Their file names
are case dependent; and this is so deeply entrenched because of
legacy etc. there is zero chance this will ever be fixed.

I know this post of mine will put the linux users in fuming mode
but it is the reality - and they will be fuming because they
know it.

Dimiter

======================================================
Dimiter Popoff, TGI http://www.tgi-sci.com
======================================================
http://www.flickr.com/photos/didi_tgi/

 

[Tom Gardner]

On 15/11/21 13:29, legg wrote:

If there weren\'t Terabyte HDDs, windows users would be in the
toilet.

I think everything in that sentence is wrong

I\'ve always created my own directory structure, holding, where
possible, related files and programs where they can be found
using the minimum of reason.

Yup.

It is amusing that recent versions of Windows have reverted
/users (I think), just as MS used 40 years ago in their
other operating system, Xenix.

Strangely, a ecent Linux distro that I\'m trying to adopt doesn\'t
seem to allow this - even going so far as to deny the existence
of navigable disc and directory structures. Can\'t fathom that
philosophy.

Which one? That will allow me to ignore it.

 

[Edward Hernandez]

The John Doe troll stated the following in message-id
<sdhn7c$pkp$4@dont-email.me>:

> The troll doesn\'t even know how to format a USENET post...

And the John Doe troll stated the following in message-id
<sg3kr7$qt5$1@dont-email.me>:

The reason Bozo cannot figure out how to get Google to keep from
breaking its lines in inappropriate places is because Bozo is
CLUELESS...

And yet, the clueless John Doe troll has itself posted yet another
incorrectly formatted USENET posting on Fri, 12 Nov 2021 15:18:43 -0000
(UTC) in message-id <smm0kj$7dg$1@dont-email.me>.

This posting is a public service announcement for any google groups
readers who happen by to point out that the John Doe troll does not even
follow it\'s own rules that it uses to troll other posters.

bq2vs0+ovpxG

 

[Edward Hernandez]

The John Doe troll stated the following in message-id
<sdhn7c$pkp$4@dont-email.me>:

> The troll doesn\'t even know how to format a USENET post...

And the John Doe troll stated the following in message-id
<sg3kr7$qt5$1@dont-email.me>:

The reason Bozo cannot figure out how to get Google to keep from
breaking its lines in inappropriate places is because Bozo is
CLUELESS...

And yet, the clueless John Doe troll has itself posted yet another
incorrectly formatted USENET posting on Fri, 12 Nov 2021 15:18:43 -0000
(UTC) in message-id <smm0kj$7dg$1@dont-email.me>.

This posting is a public service announcement for any google groups
readers who happen by to point out that the John Doe troll does not even
follow it\'s own rules that it uses to troll other posters.

bq2vs0+ovpxG

 

[Peter]

Johann Klammer <klammerj@NOSPAM.a1.net> wrote:

On 11/12/2021 03:06 PM, Johann Klammer wrote:
Altho, if it\'s slow stuff like a 400Hz sine, slowly varying, you may just have to measure the zero crossing
and guess the delay from that.


Also, 1 deg of 40kHz is around 70 nS.
I don\'t think this is relevant at all as it\'s well below your sampling period.
you could not compensate this with your 100kHz.

1 degree of *400Hz* (which is what I am generating) is 7us, which is
about 1 DAC sample period.

So despite the misunderstanding, you are still very right; there won\'t
be any realistic way to compensate for the phase shift by shifting the
table.

I could have 360 samples per cycle and then 1 sample shift would be
exactly 1 degree. Or the sample rate could be tweaked to exactly equal
the filter delay, and then I could just delay by one sample

 

[Peter]

Johann Klammer <klammerj@NOSPAM.a1.net> wrote:

On 11/12/2021 03:06 PM, Johann Klammer wrote:
Altho, if it\'s slow stuff like a 400Hz sine, slowly varying, you may just have to measure the zero crossing
and guess the delay from that.


Also, 1 deg of 40kHz is around 70 nS.
I don\'t think this is relevant at all as it\'s well below your sampling period.
you could not compensate this with your 100kHz.

1 degree of *400Hz* (which is what I am generating) is 7us, which is
about 1 DAC sample period.

So despite the misunderstanding, you are still very right; there won\'t
be any realistic way to compensate for the phase shift by shifting the
table.

I could have 360 samples per cycle and then 1 sample shift would be
exactly 1 degree. Or the sample rate could be tweaked to exactly equal
the filter delay, and then I could just delay by one sample

 

[bitrex]

On 11/18/2021 12:28 AM, jlarkin@highlandsniptechnology.com wrote:

On Thu, 18 Nov 2021 00:00:46 -0500, bitrex <user@example.net> wrote:

On 11/17/2021 11:19 PM, jlarkin@highlandsniptechnology.com wrote:

https://www.mouser.com/ProductDetail/Texas-Instruments/ISO120SG?qs=rNOSrj6uCs17dA0jO5%2FyAw%3D%3D




They had to pay the burglars to snatch some out of the Smithsonian so
they could put them back on the shelf

But I really need a low cost isolation amplifier.

Looks like roughly $3 each. SiLabs has a three channel isolated ADC
that is interesting, if I can figure out the actual throughput rate.
Si8902.

I haven\'t used SiLabs isolated ADCs but I have used their isolated gate
drivers, they\'re great value parts! You can push several MHz across the
isolation barrier into a load not a problem. Only downside is a bit less
stand-off voltage than the equivalent ADI parts, and when they say
\"moisture sensitive\" they really mean it, they\'ll go bad quick if you
don\'t mount them after being exposed to non humidity-controlled
environment.

The ADI parts say similar on the pack but in practice it never happened
to me while prototyping.

 

[bitrex]

On 11/18/2021 12:28 AM, jlarkin@highlandsniptechnology.com wrote:

On Thu, 18 Nov 2021 00:00:46 -0500, bitrex <user@example.net> wrote:

On 11/17/2021 11:19 PM, jlarkin@highlandsniptechnology.com wrote:

https://www.mouser.com/ProductDetail/Texas-Instruments/ISO120SG?qs=rNOSrj6uCs17dA0jO5%2FyAw%3D%3D




They had to pay the burglars to snatch some out of the Smithsonian so
they could put them back on the shelf

But I really need a low cost isolation amplifier.

Looks like roughly $3 each. SiLabs has a three channel isolated ADC
that is interesting, if I can figure out the actual throughput rate.
Si8902.

I haven\'t used SiLabs isolated ADCs but I have used their isolated gate
drivers, they\'re great value parts! You can push several MHz across the
isolation barrier into a load not a problem. Only downside is a bit less
stand-off voltage than the equivalent ADI parts, and when they say
\"moisture sensitive\" they really mean it, they\'ll go bad quick if you
don\'t mount them after being exposed to non humidity-controlled
environment.

The ADI parts say similar on the pack but in practice it never happened
to me while prototyping.

 

[bitrex]

On 11/18/2021 12:28 AM, jlarkin@highlandsniptechnology.com wrote:

On Thu, 18 Nov 2021 00:00:46 -0500, bitrex <user@example.net> wrote:

On 11/17/2021 11:19 PM, jlarkin@highlandsniptechnology.com wrote:

https://www.mouser.com/ProductDetail/Texas-Instruments/ISO120SG?qs=rNOSrj6uCs17dA0jO5%2FyAw%3D%3D




They had to pay the burglars to snatch some out of the Smithsonian so
they could put them back on the shelf

But I really need a low cost isolation amplifier.

Looks like roughly $3 each. SiLabs has a three channel isolated ADC
that is interesting, if I can figure out the actual throughput rate.
Si8902.

I haven\'t used SiLabs isolated ADCs but I have used their isolated gate
drivers, they\'re great value parts! You can push several MHz across the
isolation barrier into a load not a problem. Only downside is a bit less
stand-off voltage than the equivalent ADI parts, and when they say
\"moisture sensitive\" they really mean it, they\'ll go bad quick if you
don\'t mount them after being exposed to non humidity-controlled
environment.

The ADI parts say similar on the pack but in practice it never happened
to me while prototyping.

 

[bitrex]

On 11/18/2021 12:28 AM, jlarkin@highlandsniptechnology.com wrote:

On Thu, 18 Nov 2021 00:00:46 -0500, bitrex <user@example.net> wrote:

On 11/17/2021 11:19 PM, jlarkin@highlandsniptechnology.com wrote:

https://www.mouser.com/ProductDetail/Texas-Instruments/ISO120SG?qs=rNOSrj6uCs17dA0jO5%2FyAw%3D%3D




They had to pay the burglars to snatch some out of the Smithsonian so
they could put them back on the shelf

But I really need a low cost isolation amplifier.

Looks like roughly $3 each. SiLabs has a three channel isolated ADC
that is interesting, if I can figure out the actual throughput rate.
Si8902.

I haven\'t used SiLabs isolated ADCs but I have used their isolated gate
drivers, they\'re great value parts! You can push several MHz across the
isolation barrier into a load not a problem. Only downside is a bit less
stand-off voltage than the equivalent ADI parts, and when they say
\"moisture sensitive\" they really mean it, they\'ll go bad quick if you
don\'t mount them after being exposed to non humidity-controlled
environment.

The ADI parts say similar on the pack but in practice it never happened
to me while prototyping.

 

[Johann Klammer]

On 11/12/2021 05:47 PM, Peter wrote:

Johann Klammer <klammerj@NOSPAM.a1.net> wrote:

On 11/12/2021 03:06 PM, Johann Klammer wrote:
Altho, if it\'s slow stuff like a 400Hz sine, slowly varying, you may just have to measure the zero crossing
and guess the delay from that.


Also, 1 deg of 40kHz is around 70 nS.
I don\'t think this is relevant at all as it\'s well below your sampling period.
you could not compensate this with your 100kHz.

1 degree of *400Hz* (which is what I am generating) is 7us, which is
about 1 DAC sample period.

So despite the misunderstanding, you are still very right; there won\'t
be any realistic way to compensate for the phase shift by shifting the
table.

I could have 360 samples per cycle and then 1 sample shift would be
exactly 1 degree. Or the sample rate could be tweaked to exactly equal
the filter delay, and then I could just delay by one sample

you said your lowpass has 1 deg at 40kHz.

 

[Johann Klammer]

On 11/12/2021 05:47 PM, Peter wrote:

Johann Klammer <klammerj@NOSPAM.a1.net> wrote:

On 11/12/2021 03:06 PM, Johann Klammer wrote:
Altho, if it\'s slow stuff like a 400Hz sine, slowly varying, you may just have to measure the zero crossing
and guess the delay from that.


Also, 1 deg of 40kHz is around 70 nS.
I don\'t think this is relevant at all as it\'s well below your sampling period.
you could not compensate this with your 100kHz.

1 degree of *400Hz* (which is what I am generating) is 7us, which is
about 1 DAC sample period.

So despite the misunderstanding, you are still very right; there won\'t
be any realistic way to compensate for the phase shift by shifting the
table.

I could have 360 samples per cycle and then 1 sample shift would be
exactly 1 degree. Or the sample rate could be tweaked to exactly equal
the filter delay, and then I could just delay by one sample

you said your lowpass has 1 deg at 40kHz.